[Bug fortran/82143] add a -fdefault-real-16 flag

["sgk at troutmask dot apl.washington.edu" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82143

--- Comment #10 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Sat, Sep 16, 2017 at 12:39:12PM +0000, janus at gcc dot gnu.org wrote:
> 
> Please don't. I currently don't have much time to look into this issue, but I
> plan to do so in the future.
> 
> And to repeat it: Yes, I think there is an issue here to be fixed. Essentially
> what I'm looking for is an equivalent to ifort's "-real-size 128" option. I
> don't think that exists at the moment.
> 

Please don't add a new -fdefault-* option.  All of the current
-fdefault-* options should be deprecated in favor of the -freal-*, 
-finteger-*, etc options.

I don't have access to ifort, so I have no idea what "-real-size 128"
does.  A google search does not find this.  I did find